one change made

while 2:264 was a mistake made inadvertent­ly in Cairo

on 56:2 Qaṭar made a conscious change

Because 55:2 is written without alif in Al-Mushaf Al-Sharif Attributed to Uthman Bin Affan in the Topkapı Palace published by Tayyar Altıkulaç (İSAM) who adviced the Qaṭāris they followed the old manuscript.

al-Wāqiʿa 2 / kāḏība

In Baqara 72 I showed that "Medina" makes undocumented changes to Būlāq52.

Here I show that Qaṭar made another change to Būlāq52 ‒ again without explanations.

The Iranian Center for Printing and Distributing the Qurʾān (Ṭabʿo Našr) developed a new rasm, a new orthography and new vowelled waṣl signs. After studying the literature on writing the muṣḥaf and 26 important maṣāḥif from different regions and different riwāyāt, they publish their results and their reasons.
In Indonesian there was a commitee of ʿulema from all over the country that deliberates 1974 to 1983 and fixed a standard, a second comittee revisted the standard in 2002, and a third from 2015 to 2018.